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文件名称:
stdarg-h.md
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Openharmony v1.0 / docs / api / api-SmartVision-Devices
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# stdarg.h
## **Overview**
**Related Modules:**
[UTILS](UTILS.md)
**Description:**
Provides functions and data structures, such as applying for and ending a variable-length argument list and obtaining an argument type.
**Since:**
1.0
**Version:**
1.0
## **Summary**
## Macros
## **Overview**
**Related Modules:**
[UTILS](UTILS.md)
**Description:**
Provides functions and data structures, such as applying for and ending a variable-length argument list and obtaining an argument type.
**Since:**
1.0
**Version:**
1.0
## **Summary**
## Macros
va_start(v, l) __builtin_va_start(v,l) | Defines the start position of the variable-length argument list. |
va_end(v) __builtin_va_end(v) | Ends a variable-length argument list. |
va_arg(v, l) __builtin_va_arg(v,l) | Obtains the next argument in the variable-length argument list. |
va_copy(d, s) __builtin_va_copy(d,s) | Copies the previously initialized variable argument list s to d. |
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